media: device property: Add a function to test is a fwnode is a graph…

… endpoint Drivers may need to test if a fwnode is a graph endpoint. To avoid hand-written solutions that wouldn't work for all fwnode types, add a new fwnode_graph_is_endpoint() function for this purpose. We don't need to wire it up to different backends for OF and ACPI for now, as the implementation can simply be based on checkout the presence of a remote-endpoint property. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Niklas Söderlund <[email protected]> Reviewed-by: Lad Prabhakar <[email protected]> Reviewed-by: Kieran Bingham <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]>
sigmaris · Aug 3, 2020 · db966e8 · db966e8
1 parent 8eb4bea
commit db966e8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/include/linux/property.h b/include/linux/property.h
@@ -389,6 +389,11 @@ struct fwnode_handle *
 fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
 			     u32 endpoint);
 
+static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
+{
+	return fwnode_property_present(fwnode, "remote-endpoint");
+}
+
 /*
  * Fwnode lookup flags
  *